Rim-handling device



May 8, 1923. i54 27 D. A. DAVIES RIM HANDLING DEVICE Original Filed Feb. 12, 1921 2 Sheets-Sheet 1 INVENTOR VVFTN ESSES D. A. DAVIES RIM HANDLING DEVICE Qriginal Filed Feb. 12., 1921 2 Sheets-Sheet 2 WlTN EssEs fl! ft WWW QM g

Patented- May 8, 1923.

ear-r sraras DAVID A. DAVIES, 0F CLEVELAND, OHIO,

ASSIGNOR TO WEAVER MANUFACTURING COMPANY, OF SPRINGFIELD, ILLINOIS, A CORPORATION.

RIM-HANDLING- DEVICE.

Application filed. February 12, 1921, Serial No. 444,527. Renewed September 27, 1922. Serial No. 590,998.

T 0 allwlzom it may concern:

Be it known that 1, DAVID A. DAVIES, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a new and useful Rim-Handling Device, of which the following 1s a specification.

This invention relates to devices for expending and contracting the rims of pneu- 19 matic tires.

An object of the invention is to provide arim expanding and contracting device which engages the rim at three widely spaced points whereby pressure may be applied to either the inside or outside ofthe rim to cause ex- 9 gaging members to move against either face oithe rim. I

Another object is to provide an improved device including a stand, which stand has guides thereon for the two movable rim-engaging members.

A iurther object is to improve the construction of the rim-engaging members whereby expansion and contraction are effected with equal ease.

Other general objects are to provide a device of this character whichsupports a. rim in a substantially horizontal position at a convenient elevation above the floor so that the work of demounting and re-mounting tires is reduced to a minimum; to provide a device which 'is easy to operate, and in general to improve upon the construction and operation of rim-handling tools.

The invention will be best understood from a consideration of the following detailed description taken .in connection with the accompanying drawing forming part of this specification, with the understanding, however, that the invention is not confined to any strict conformity with the showing in the drawing, but may be changed and modified so long as such changes and modifications mark no material departure from the salientfeatures of the invention as expressed in the appended claims.

In the drawing: I

Fig. 1 is a perspective view of the device of the invention showing a rim in position thereon.

Fig. 2 is a perspective view of the upper part of the device Fig. 3 is a detail on an enlarged'scale illustrating the means by which the rim-engaging members are guided. Figs. 4 and 5 are detail views, respectively in plan and elevation, illustrating th construction of the central casting and the manner in which it is guided.

The present invention is an improvement upon the rim-handling tool described and claimed in an application filed by Thomas W. Slut z, Serial No. 325,361. The invention includes a stand preferably made out of angle iron and of skeleton form. The stand comprises the four uprights 6 joined by horizontal members 7 and 8, and strengthened by braces 9. The top of the stand has an outline similar to an isosceles triangle, of which the angle bar 10 forms the base. The two equal legs of this triangular top are each made up of a. pair of angle bars 11 which are spaced apart as indicated at 12, so as to provide what is in effect a slot. Obviously in the place of two spaced-apart angle bars a slotted channel bar may be used with exactly the same effect. At the apex of the triangle a flat plate 13 is provided, said plate forming a relatively broad base upon which a bracket member 16 is supported. The construction so far described provides a very rigid, strong and durable supporting frame for the rim-handling tool proper, which frame also guides the moving parts of the tool, as will be described.

Secured in any desirable way to the. bracket 16 so as to be immovable relative thereto is a casting 19 having a rim-engaging member 20 integral therewith. This rimcngaging member is shaped in such away that it may engage either the inside or the outside of a rim to effect expansion or contraction of the latter. For this purpose, it should be shaped like the letter L with a short hook at the outer end to engage with the flangefof the rim when contraction is being effected. In brief, the member 20 is shaped similarly to the movable rim-engaging member clearly shown in the drawing, though as yet not described. The casting 19 is bored to receive a shaft 17. One end of the shaft 17 has a crank 18 fast thereto whereby rotation of the crank causes the shaft 17 to turn in the casting. Outside the casting the shaft is screw-threaded. A. movable casting 2 1 is mounted on the screwthreaded section of shaft 17 so that rotation of the crank 18 causes travel of the part 21 longitudinally of the shaft. The casting 2i has two pairs of spaced ears 22 whereby bars or links 23 may be pivotally connected at their ends to the central casting. The latter has a. leg 24- whose lower end is reduced indicated at 26, a foot 25 being provided at the extremity of the leg 24-.

A pair of angle bars 14 extend parallel to each other between the plate 13 at a mid-point of the angle bar 10, the space 15 between the angle oars receiving the reduced portion 26 of the leg 24: as shown in Fig. 5. Thus the rotation of the shaft 17 causes only longitudinal movement of the casting 21. The leg 24c as it slides over the angle bars 14 aids in the supportof the shaft 17, especially when the casting 21 is near the outer end thereof.

The pivoted bars 23 are secured at their outer ends, as by bolts 29, between the spaced ears 28 of rim-engaging members 27. These rim-engaging members have heads 31 similar to the heads 25 joined by reduced portions 30 to the main body of the members; thus the members are guided in the slot Since the reduced portions 30 are rounded, turning of the members 27 to assume different angular positions relative to the angle bars 11 is permitted. Each member 27 has a flat face 32 upon which the lower annular edge of the rim is adapted to rest. A hook portion 33 forms a part of eachmember 27, and an upstanding face 34: is opposed to the hook portion 33. The upper parts of the members 27 are provided with inwardly-directed fingers or projections 35 so that a rim slid over from the rear of the members is guided into the seat formed by parts 32, 33 and 34. The hooks 33 engage the flange of the rim when contracting thereof is desired, while the upright faces 3e come in contact with the inner faces when they are expanded. The member 20 while stationary engages either face of the rim in each operation so that the tool acts upon the rim at three widely separated points, which be 120 apart. The projections 35 are also useful in contracting small rims, which may oe seated on top of the members 28.

What is claimed is 1- 1. In a rim handling device, the combination with a stand having a plurality oisiotted guides at the top, of a tired rim-engaging member mounted on the stand, pair of rim-engaging members movabie on. said guides and provided with a depcndiin element slidable in the guides, a shait mounted in said fixed member and having a crank whereby it may be turned, shaft being screw-threaded beyond the member, and located above the horizontal plane of the guides, and a casting connecting the two movable rim-engaging members'with the screw-threads of said shaft and provided with a de ending element slidably mounted in a guide.

2. In a rim handling tool, a fixed rimengaging member, a shaft passing through said member and rotatable therein, a crank at one end of the shaft, the portion of the shaft beyond the member and remote from the crank being screw-threaded, a casting mounted on the screw-threadedportion of said shaft to move longitudinally when the shaft is rotated, a pair of rim engaging members connected to said casting and moved thereby, and a stand supporting the fixed rirn engaging member, the casting and the two movable members. said stand having separate guide means for both the casting and the movable members.

3. In a rim handling tool, the combination with a. stand having slotted guides at the top, of a fixed rim engaging member mounted on the stand, a pair of rim engaging members movable in said guides, each movable rim engaging member being provided with a reduced section fitting the slot and an enlarged foot portion interlocking with the guides below the slot, and means carried by the fixed member and manually operable for causing simultaneous movement of both of the guided rim engaging members. I

4-. In a rim handling tool, the combination with a stand having slotted guides at the top, said top having the outline substantially of an isosceles triangle, two of the slotted guides forming the two equal sides of said triangle, and a third slotted guide bisecting the angle between said sides, a fixed rim engaging member mounted at a point corresponding to the apex of the triangle, :1 pair of rim engaging members movable in the slotted guides forming the sides, means slidable in the other slotted guide and connected with the'two rim engaging, members, and manually operable means for causing movement of the latter means and hence of both movable rim en gaging members.

5. In a rim handling tool, a rim engaging member having a base portion upon which the edge of the rim flange is adapted to rest, a hook-like portion rising above 1 the fiat base portion and turned inwardly to over-hang the latter, and a straight upit abutment face rising above the base rtion and also above the hook, up

aving angular in. form and comprising angle bars at each side, i

. pair being spaced apart to provide a slot,

a plate at the apex ofthe triangle and to which the angle bars are secured, and a third pair of bars also spaced apart to provide a slot, said last mentioned pair being seouredto said plateand to the top of the stand, a rim-engaging member rigidly mounted on said plate, a shaft also mounted v on said plate, a crank for said shaft, threads 10 provided on said shaft, a casting engaged by the threads of said shaft, a depending element provided on said casting and engaging with the slot of the third pair of bars, movable rim-engaging members connected with said castin and depending elements on said Inova 1e rim-engaging members to engage with the slots of the other pairs of angle bars.

In testimony that I claim the foregoing as my own, I have hereto aflixed my sig- 20 nature.

DAVID A. DAVIES. 

